is a lie
Mucha gente dice que es mentira.
Many people say it's a lie.
Sabe que es mentira y que no puede volver.
He knows it's a lie and that he cannot go back.
— Las diabólicas (1955)
Dice que no ha mentido nunca, lo cual es mentira.
He says he has never lied, which is a lie.
Todo lo que Tom dice es mentira.
Everything Tom says is a lie.
This is a lie.
Everything he says is a lie.